The CHARGE/ASSIST gage displays the charge (current) into and out of the hybrid battery.

When the electric motor is performing an automatic restart of the engine, or when it is assisting the engine as in a maximum acceleration, the needle will move to the ASSIST range. The ASSIST range is on the right side of the gage, and shows an arrow pointing out of a battery. When the electric motor operates as a generator to perform regenerative braking while decelerating, the needle will move to the CHARGE range. See Regenerative Braking for more information. The needle will also move into the CHARGE range if the hybrid control system deems it is an efficient time to charge the hybrid battery. The CHARGE range is on the left side of the gage, and shows an arrow pointing into a battery.

If the hybrid battery or other hybrid components are very hot or cold, the CHARGE and ASSIST functions may be suspended until the component temperatures are normal.